WO2010023412A1 - Precentring device for automatic assembly by thermal expansion of tools with a tool holder - Google Patents
Precentring device for automatic assembly by thermal expansion of tools with a tool holder Download PDFInfo
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- WO2010023412A1 WO2010023412A1 PCT/FR2009/051635 FR2009051635W WO2010023412A1 WO 2010023412 A1 WO2010023412 A1 WO 2010023412A1 FR 2009051635 W FR2009051635 W FR 2009051635W WO 2010023412 A1 WO2010023412 A1 WO 2010023412A1
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- Prior art keywords
- tools
- tail
- tool holder
- receiving
- tool
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/117—Retention by friction only, e.g. using springs, resilient sleeves, tapers
- B23B31/1179—Retention by friction only, e.g. using springs, resilient sleeves, tapers using heating and cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/026—Chucks the radial or angular position of the tool being adjustable
- B23B31/0261—Chucks the radial or angular position of the tool being adjustable for centering the tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2231/00—Details of chucks, toolholder shanks or tool shanks
- B23B2231/48—Polygonal cross sections
Definitions
- the present invention relates to the field of accessories for machine tools, in particular numerically controlled machines, machining centers, machines or transfer lines, for high-speed machining or for which a high accuracy of concentricity is required.
- Required particularly tools assembled to the tool holders by thermal expansion of the latter, and relates to a tool holder, provided with a precentering device for the automatic assembly by thermal expansion of tools with said tool holder.
- DE-A-102 44 751 describes a precentering device which is outside the tool holder and which is applied on the base of the tail of the tool, outside the inlet of the receiving bore. of said tail of the tool.
- This device consists, in fact, in four pins placed radially on the front face of the tool holder and having a form of legs, between which the lower part of the tail is inserted.
- Such a device requires complex machining and simply describes a space delimited by four tabs whose width is negligible relative to the diameter of the circle inscribed between the inner faces of these tabs, so that the maintenance of the tail of the tool is random.
- the present invention aims to overcome these disadvantages by providing a tool holder, provided with a pre-centering device for the automatic assembly by thermal expansion of tools with said tool holder, to perform a precise precentring and maintenance sufficiently close a tool at the entrance of a tool holder before the thermal expansion of the latter.
- the tool holder provided with a precentering device for the automatic assembly by thermal expansion of tools with said tool holder, which consists essentially of a means for receiving the end of the tail of the tools, provided at the inlet of the receiving bore of said tail, is characterized in that the means for receiving the end of the tail of the tools delimits a polygonal section volume inscribing a circle of diameter slightly greater than the diameter of the tail of the tools and the receiving bore of said tail.
- FIG. a perspective view of a tool holder provided with a precentering device according to the invention
- FIG. 2 is a side elevational view in section of the tool holder according to FIG. 1
- FIGS. 3 to 8 are partial perspective views of the entry of tool holders, on a smaller scale, representing variants. embodiment of the device according to the invention.
- FIGS. 1 and 2 of the accompanying drawings represent, by way of example, a tool holder 2 provided with a precentering device for the automatic assembly by thermal expansion of tools with said tool carrier 2, which consists essentially of means 1 for receiving the end of the tail of the tools, provided at the inlet of the bore 3 for receiving said tail.
- the tail of the tool intended to be mounted in the tool holder 2 and the corresponding tool are not shown in the figures of the accompanying drawings.
- the means 1 for receiving the end of the tail of the tools which constitutes the precentering device, defines a polygonal section volume registering a circle of diameter slightly greater than the diameter of the tail of the tools and the bore 3 for receiving said tail.
- the ends of the sides defining the polygonal section of the means 1 are advantageously interconnected by rounded large radii. Such roundings have the advantage of being simpler than very low radius edges and therefore require for their implementation that the implementation of tools of larger size and therefore more resistant.
- the volume delimiting the means 1 for receiving the end of the tail of the tools, which constitutes the precentering device preferably has a small height relative to the diameter of the tail of the tool and to the length of the Boring 3 of the tool holder 2.
- Such a limitation of the height of the means 1 is necessary, in order to guarantee a sufficient length of fitting of the shank of the tool in the bore 3 of the tool holder 2 and therefore a surface hooping sufficiently important.
- the circle inscribed in the polygonal section of the means 1 advantageously has a diameter allowing a sliding fit with the end of the tail of the tool.
- Figures 1 and 2 of the accompanying drawings show a first embodiment of the invention, wherein the polygon defining the volume defined by the means 1 for receiving the end of the tail of the tools is a hexagon. In such a case, the end of the tail of the tool is in contact with the means 1 by six generators.
- Figures 3 to 5 of the accompanying drawings show three alternative embodiments of the means 1, wherein the polygons are respectively triangular base (Figure 3), square base ( Figure 4) and pentagonal base (Figure 5).
- the polygonal section volume defined by the means 1 for receiving the end of the tail of the tools which constitutes the precentering device, presents a narrowing of the section from the inlet to the bore 3 of the tool holder 2 for receiving the tail of the tool.
- FIGS. 6 to 8 of the accompanying drawings which correspond, respectively, to a triangular base (FIG. 6), to a square base (FIG. 7) and to a pentagonal base. ( Figure 8).
- the various facets defining the polygonal section volume extend obliquely towards the bore 3, the parts corresponding to their edges penetrating deeper inside the bore 3, in the form of channels with section in cone segment 4.
- the pre-centering of the end of the tail of the tool is even better favored and its holding in the pre-centering position is ensured in the same way as in the case of a means 1 with constant section on any his height.
- the invention it is possible to perform a perfect pre-centering and positioning of a tool tail end at the input of a tool holder, without requiring expensive additional means and complex implementation.
- the invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The present invention relates to a precentring device for automatic assembly by thermal expansion of tools with a tool holder (2), essentially consisting of a means (1) for receiving the end of the shank of the tools, said means being provided at the inlet of the bore (3) for receiving said shank. Device characterized in that the means (1) for receiving the end of the shank of the tools defines a volume of polygonal cross section inscribing a circle whose diameter is slightly greater than the diameter of the shank of the tools and the bore (3) for receiving said shank. The invention can be applied more particularly in the field of accessories for machine tools, in particular numerical control machines, machining centres, transfer machines or lines, for high-speed machining or for which a high degree of concentricity precision is required.
Description
Dispositif de précentrage pour l'assemblage automatique par dilatation thermique d'outils avec un porte-outils Pre-centering device for the automatic assembly by thermal expansion of tools with a tool holder
La présente invention concerne le domaine des accessoires des machines-outils, en particulier des machines à commande numérique, des centres d'usinage, des machines ou lignes de transfert, pour l'usinage à grande vitesse ou pour lesquelles une grande précision de concentricité est requise, notamment les outils assemblés aux porte-outils par dilatation thermique de ces derniers, et a pour objet un porte-outils, muni d'un dispositif de précentrage pour l'assemblage automatique par dilatation thermique d'outils avec ledit porte outil.The present invention relates to the field of accessories for machine tools, in particular numerically controlled machines, machining centers, machines or transfer lines, for high-speed machining or for which a high accuracy of concentricity is required. Required, particularly tools assembled to the tool holders by thermal expansion of the latter, and relates to a tool holder, provided with a precentering device for the automatic assembly by thermal expansion of tools with said tool holder.
Le principe du frettage est connu depuis fort longtemps, également dans le contexte de l'assemblage outil / porte-outils.The principle of hooping has been known for a long time, also in the context of tool / tool assembly.
Ainsi, il existe actuellement des dispositifs de frettage porte- outils/outils avec intervention manuelle pour l'emmanchement, nécessitant la mise en rotation des porte-outils, d'autres qui ne garantissent pas un emmanchement complet sur la hauteur désirée (d'où risque de perte d'outil en usinage), et d'autres encore qui ne présentent pas la sécurité d'emploi indispensable à l'utilisation industrielle.Thus, there are currently shrinking devices toolholders / tools with manual intervention for fitting, requiring the rotation of the tool holders, others that do not guarantee a complete fit on the desired height (hence risk of loss of tool in machining), and still others which do not present the safety of use essential for the industrial use.
Du fait que dans le cas de mandrins à fretter, le diamètre du porte-outils est plus faible que celui de l'outil, il est impossible de positionner ce dernier avant de procéder au frettage. A cet effet, il a été proposé de munir l'entrée des porte-outils d'un alésage de faible longueur et de diamètre légèrement supérieur à celui de la queue de l'outil, tout en maintenant ledit outil par l'intermédiaire d'un dispositif de guidage solidaire de la machine à fretter (EP-A-O 830 917). En outre, l'entrée de l'alésage du porte-outils est reliée à ce très court alésage par un chanfrein de liaison, de sorte qu'aucune portée suffisante ne pourrait être assurée sans la présence du dispositif de maintien.Because in the case of fretted chucks, the diameter of the tool holder is smaller than that of the tool, it is impossible to position the latter before making the hooping. For this purpose, it has been proposed to provide the input of the tool holders with a bore of short length and diameter slightly greater than that of the tail of the tool, while maintaining said tool via a guiding device integral with the fretting machine (EP-A-0 830 917). In addition, the entry of the bore of the tool holder is connected to this very short bore by a connecting bevel, so that no sufficient reach could be ensured without the presence of the holding device.
Il a également été proposé de réaliser l'extrémité de la queue d'outil d'un diamètre inférieur à celui de l'alésage du porte-outils (EP-A-I 008 409). Un tel mode de réalisation ne permet, cependant pas la mise en œuvre d'outils standards.It has also been proposed to make the end of the tool shank smaller in diameter than that of the bore of the tool holder (EP-A-008409). Such an embodiment does not allow, however, the implementation of standard tools.
Par ailleurs, DE-A- 102 44 751 décrit un dispositif de précentrage qui est extérieur au porte-outils et qui s'applique sur la base de la queue de l'outil, en dehors de l'entrée de l'alésage de réception de ladite queue de l'outil. Ce dispositif consiste, en fait, en quatre ergots placés
radialement sur la face avant du porte-outils et présentant une forme de pattes, entre lesquelles la partie inférieure de la queue est insérée. Un tel dispositif nécessite des usinages complexes et décrit simplement un espace délimité par quatre pattes, dont la largeur est négligeable par rapport au diamètre du cercle inscrit entre les faces internes de ces pattes, de sorte que le maintien de la queue de l'outil est aléatoire.Furthermore, DE-A-102 44 751 describes a precentering device which is outside the tool holder and which is applied on the base of the tail of the tool, outside the inlet of the receiving bore. of said tail of the tool. This device consists, in fact, in four pins placed radially on the front face of the tool holder and having a form of legs, between which the lower part of the tail is inserted. Such a device requires complex machining and simply describes a space delimited by four tabs whose width is negligible relative to the diameter of the circle inscribed between the inner faces of these tabs, so that the maintenance of the tail of the tool is random.
La présente invention a pour but de pallier ces inconvénients en proposant un porte-outils, muni d'un dispositif de précentrage pour l'assemblage automatique par dilatation thermique d'outils avec ledit porte - outils, permettant de réaliser un précentrage précis et un maintien suffisamment ferme d'un outil à l'entrée d'un porte-outils avant la dilatation thermique de ce dernier.The present invention aims to overcome these disadvantages by providing a tool holder, provided with a pre-centering device for the automatic assembly by thermal expansion of tools with said tool holder, to perform a precise precentring and maintenance sufficiently close a tool at the entrance of a tool holder before the thermal expansion of the latter.
A cet effet, le porte-outils, muni d'un dispositif de précentrage pour l'assemblage automatique par dilatation thermique d'outils avec ledit porte outil, qui consiste essentiellement en un moyen de réception de l'extrémité de la queue des outils, prévu à l'entrée de l'alésage de réception de ladite queue, est caractérisé en ce que le moyen de réception de l'extrémité de la queue des outils délimite un volume de section polygonale inscrivant un cercle de diamètre légèrement supérieur au diamètre de la queue des outils et de l'alésage de réception de ladite queue.For this purpose, the tool holder, provided with a precentering device for the automatic assembly by thermal expansion of tools with said tool holder, which consists essentially of a means for receiving the end of the tail of the tools, provided at the inlet of the receiving bore of said tail, is characterized in that the means for receiving the end of the tail of the tools delimits a polygonal section volume inscribing a circle of diameter slightly greater than the diameter of the tail of the tools and the receiving bore of said tail.
L'invention sera mieux comprise, grâce à la description ci- après, qui se rapporte à des modes de réalisation préférés, donnés à titre d'exemples non limitatifs, et expliqués avec référence aux dessins schématiques annexés, dans lesquels : la figure 1 est une vue en perspective d'un porte-outils pourvu d'un dispositif de précentrage, conforme à l'invention ; la figure 2 est une vue en élévation latérale et en coupe du porte-outils suivant la figure 1 , et les figures 3 à 8 sont des vues partielles en perspective de l'entrée de porte-outils, à plus petite échelle, représentant des variantes de réalisation du dispositif conforme à l'invention.The invention will be better understood, thanks to the following description, which refers to preferred embodiments, given by way of non-limiting examples, and explained with reference to the appended diagrammatic drawings, in which: FIG. a perspective view of a tool holder provided with a precentering device according to the invention; FIG. 2 is a side elevational view in section of the tool holder according to FIG. 1, and FIGS. 3 to 8 are partial perspective views of the entry of tool holders, on a smaller scale, representing variants. embodiment of the device according to the invention.
Les figures 1 et 2 des dessins annexés représentent, à titre d'exemple, un porte-outils 2, muni d'un dispositif de précentrage pour l'assemblage automatique par dilatation thermique d'outils avec ledit porte outils 2, qui consiste essentiellement en un moyen 1 de réception de l'extrémité de la queue des outils, prévu à l'entrée de l'alésage 3 de réception de ladite queue. Pour des raisons de clarté, la queue de l'outil destinée à être
emmanchée dans le porte-outils 2 et l'outil correspondant ne sont pas représentés aux figures des dessins annexés.FIGS. 1 and 2 of the accompanying drawings represent, by way of example, a tool holder 2 provided with a precentering device for the automatic assembly by thermal expansion of tools with said tool carrier 2, which consists essentially of means 1 for receiving the end of the tail of the tools, provided at the inlet of the bore 3 for receiving said tail. For the sake of clarity, the tail of the tool intended to be mounted in the tool holder 2 and the corresponding tool are not shown in the figures of the accompanying drawings.
Conformément à l'invention et comme le montrent les figures 1 et 2 des dessins annexés, le moyen 1 de réception de l'extrémité de la queue des outils, qui constitue le dispositif de précentrage, délimite un volume de section polygonale inscrivant un cercle de diamètre légèrement supérieur au diamètre de la queue des outils et de l'alésage 3 de réception de ladite queue.According to the invention and as shown in Figures 1 and 2 of the accompanying drawings, the means 1 for receiving the end of the tail of the tools, which constitutes the precentering device, defines a polygonal section volume registering a circle of diameter slightly greater than the diameter of the tail of the tools and the bore 3 for receiving said tail.
Ainsi, il est possible d'introduire l'extrémité d'une queue, en forme de cylindre de révolution d'un outil, dans le moyen 1 réalisant le dispositif de précentrage et d'assurer un maintien suffisant de l'ensemble de la queue de l'outil et de l'outil pendant l'opération de chauffage du porte- outils en vue de sa dilatation. Cette dilatation aura pour conséquence d'agrandir l'alésage 3 de manière à permettre l'insertion complète de la queue de l'outil par ajustement glissant ou par introduction légèrement forcée au moyen d'un vérin ou analogue.Thus, it is possible to introduce the end of a tail, in the form of a cylinder of revolution of a tool, in the means 1 realizing the precentering device and to ensure sufficient maintenance of the entire tail of the tool and tool during the heating operation of the tool holder for expansion. This expansion will have the effect of enlarging the bore 3 so as to allow the complete insertion of the tail of the tool by sliding adjustment or by slightly forced introduction by means of a jack or the like.
Les extrémités des côtés délimitant la section polygonale du moyen 1 sont avantageusement reliées entre elles par des arrondis à grands rayons. De tels arrondis présentent l'avantage d'être de réalisation plus simple que des arêtes à rayons très faibles et ne nécessitent donc pour leur exécution que la mise en œuvre d'outils de dimension plus importante et donc plus résistants.The ends of the sides defining the polygonal section of the means 1 are advantageously interconnected by rounded large radii. Such roundings have the advantage of being simpler than very low radius edges and therefore require for their implementation that the implementation of tools of larger size and therefore more resistant.
Le volume délimitant le moyen 1 de réception de l'extrémité de la queue des outils, qui constitue le dispositif de précentrage, présente, de préférence, une faible hauteur par rapport au diamètre de la queue de l'outil et à la longueur de l'alésage 3 du porte-outils 2. Une telle limitation de la hauteur du moyen 1 est nécessaire, afin de garantir une longueur suffisante d'emmanchement de la queue de l'outil dans l'alésage 3 du porte outil 2 et donc une surface de frettage suffisamment importante. De préférence, et pour réaliser une meilleure tenue et un meilleur centrage de la queue de l'outil dans le moyen 1 formant le dispositif de précentrage, le cercle inscrit dans la section polygonale du moyen 1 présente avantageusement un diamètre permettant un ajustement glissant avec l'extrémité de la queue de l'outil. Ainsi, l'extrémité de la queue de l'outil et donc l'ensemble de la queue, ainsi que l'outil, sont parfaitement alignés concentriquement dans le moyen 1 formant le dispositif de précentrage et donc aussi concentriquement avec l'alésage 3 du porte-outils
- A -The volume delimiting the means 1 for receiving the end of the tail of the tools, which constitutes the precentering device, preferably has a small height relative to the diameter of the tail of the tool and to the length of the Boring 3 of the tool holder 2. Such a limitation of the height of the means 1 is necessary, in order to guarantee a sufficient length of fitting of the shank of the tool in the bore 3 of the tool holder 2 and therefore a surface hooping sufficiently important. Preferably, and to achieve a better hold and a better centering of the tail of the tool in the means 1 forming the precentering device, the circle inscribed in the polygonal section of the means 1 advantageously has a diameter allowing a sliding fit with the end of the tail of the tool. Thus, the end of the tail of the tool and therefore the entire tail, as well as the tool, are perfectly aligned concentrically in the means 1 forming the precentering device and therefore also concentrically with the bore 3 of the toolholders - AT -
2, de sorte que lors de la dilatation de ce dernier par chauffage, la queue de l'outil peut facilement pénétrer par glissement ou sous pression dans ledit alésage 3.2, so that during the expansion of the latter by heating, the tail of the tool can easily penetrate by sliding or under pressure in said bore 3.
Les figures 1 et 2 des dessins annexés représentent un premier mode de réalisation de l'invention, dans laquelle le polygone définissant le volume délimité par le moyen 1 de réception de l'extrémité de la queue des outils est un hexagone. Dans un tel cas, l'extrémité de la queue de l'outil est en contact avec le moyen 1 par six génératrices.Figures 1 and 2 of the accompanying drawings show a first embodiment of the invention, wherein the polygon defining the volume defined by the means 1 for receiving the end of the tail of the tools is a hexagon. In such a case, the end of the tail of the tool is in contact with the means 1 by six generators.
Les figures 3 à 5 des dessins annexés représentent trois variantes de réalisation du moyen 1, dans lesquelles les polygones sont respectivement à base triangulaire (figure 3), à base carrée (figure 4) et à base pentagonale (figure 5).Figures 3 to 5 of the accompanying drawings show three alternative embodiments of the means 1, wherein the polygons are respectively triangular base (Figure 3), square base (Figure 4) and pentagonal base (Figure 5).
Pour augmenter encore les capacités de centrage et de maintien de l'extrémité de la queue des outils, le volume de section polygonale délimité par le moyen 1 de réception de l'extrémité de la queue des outils, qui constitue le dispositif de précentrage, présente un rétrécissement de la section à partir de l'entrée jusqu'à l'alésage 3 du porte-outils 2 destiné à la réception de la queue de l'outil.To further increase the capabilities of centering and maintaining the end of the tail of the tools, the polygonal section volume defined by the means 1 for receiving the end of the tail of the tools, which constitutes the precentering device, presents a narrowing of the section from the inlet to the bore 3 of the tool holder 2 for receiving the tail of the tool.
Des modes de réalisation du dispositif 1 avec une telle réduction de section sont représentés aux figures 6 à 8 des dessins annexés qui correspondent, respectivement, à une base triangulaire (figure 6), à une base carrée (figure 7) et à une base pentagonale (figure 8). Dans un tel cas, les différentes facettes délimitant le volume de section polygonale s'étendent à l'oblique en direction de l'alésage 3, les parties correspondant à leurs arêtes pénétrant plus profondément à l'intérieur de l'alésage 3, sous forme de canaux à section en segment de cône 4.Embodiments of the device 1 with such sectional reduction are shown in FIGS. 6 to 8 of the accompanying drawings which correspond, respectively, to a triangular base (FIG. 6), to a square base (FIG. 7) and to a pentagonal base. (Figure 8). In such a case, the various facets defining the polygonal section volume extend obliquely towards the bore 3, the parts corresponding to their edges penetrating deeper inside the bore 3, in the form of channels with section in cone segment 4.
Dans un tel mode de réalisation, le précentrage de l'extrémité de la queue de l'outil est encore mieux favorisé et son maintien en position de précentrage est assuré de manière identique que dans le cas d'un moyen 1 à section constante sur toute sa hauteur.In such an embodiment, the pre-centering of the end of the tail of the tool is even better favored and its holding in the pre-centering position is ensured in the same way as in the case of a means 1 with constant section on any his height.
Grâce à l'invention, il est possible de réaliser un précentrage et un positionnement parfaits d'une extrémité de queue d'outils à l'entrée d'un porte-outils, sans nécessiter de moyens complémentaires onéreux et de mise en œuvre complexe. Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et représentés aux dessins annexés. Des modifications restent possibles, notamment du point de vue de la constitution des divers
éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention.
Thanks to the invention, it is possible to perform a perfect pre-centering and positioning of a tool tail end at the input of a tool holder, without requiring expensive additional means and complex implementation. Of course, the invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.
Claims
1. Porte-outils (2), muni d'un dispositif de précentrage pour l'assemblage automatique par dilatation thermique d'outils avec ledit porte outils, ce dispositif consistant essentiellement en un moyen de réception (1) de l'extrémité de la queue des outils, prévu sur le porte-outils (2), à l'entrée de l'alésage (3) de réception de ladite queue des outils, caractérisé en ce que le moyen de réception (1) de l'extrémité de la queue des outils délimite un volume de section polygonale inscrivant un cercle de diamètre légèrement supérieur au diamètre de la queue des outils et de l'alésage (3) de réception de ladite queue. 1. Tool holder (2), provided with a precentering device for the automatic thermal expansion assembly of tools with said tool holder, this device essentially consisting of a receiving means (1) of the end of the shank of the tools, provided on the tool holder (2), at the inlet of the bore (3) for receiving said tail of the tools, characterized in that the receiving means (1) of the end of the The tail of the tools delimits a polygonal section volume inscribing a circle of diameter slightly greater than the diameter of the tail of the tools and the bore (3) for receiving said tail.
2. Porte-outils, suivant la revendication 1, caractérisé en ce que les extrémités des côtés délimitant la section polygonale du moyen (1) sont reliées entre elles par des arrondis à grands rayons.2. Tool holder according to claim 1, characterized in that the ends of the sides defining the polygonal section of the means (1) are interconnected by rounded large radii.
3. Porte-outils, suivant la revendication 1, caractérisé en ce que le volume délimitant le moyen (1) de réception de l'extrémité de la queue des outils, qui constitue le dispositif de précentrage, présente, une faible hauteur par rapport au diamètre de la queue de l'outil et à la longueur de l'alésage (3) du porte-outils (2).3. Tool holder according to claim 1, characterized in that the volume delimiting the means (1) for receiving the end of the tail of the tools, which constitutes the precentering device, has a low height relative to the diameter of the tail of the tool and the length of the bore (3) of the tool holder (2).
4. Porte-outils, suivant la revendication 1, caractérisé en ce que le cercle inscrit dans la section polygonale du moyen (1) présente un diamètre permettant un ajustement glissant avec l'extrémité de la queue de l'outil.4. Tool holder according to claim 1, characterized in that the circle inscribed in the polygonal section of the means (1) has a diameter allowing a sliding fit with the end of the tail of the tool.
5. Porte-outils, suivant la revendication 1, caractérisé en ce que le volume de section polygonale délimité par le moyen (1) de réception de l'extrémité de la queue des outils, qui constitue le dispositif de précentrage, présente un rétrécissement de la section à partir de l'entrée jusqu'à l'alésage (3) du porte-outils (2) destiné à la réception de la queue de l'outil.5. Tool holder according to claim 1, characterized in that the polygonal section volume defined by the means (1) for receiving the end of the tail of the tools, which constitutes the precentering device, has a narrowing of the section from the inlet to the bore (3) of the tool holder (2) for receiving the tail of the tool.
6. Porte-outils, suivant la revendication 5, caractérisé en ce que les différentes facettes délimitant le volume de section polygonale s'étendent à l'oblique en direction de l'alésage (3), les parties correspondant à leurs arêtes pénétrant plus profondément à l'intérieur de l'alésage (3), sous forme de canaux à section en segment de cône (4). 6. Tool holder according to claim 5, characterized in that the various facets defining the polygonal section volume extend obliquely towards the bore (3), the parts corresponding to their edges penetrating deeper. inside the bore (3) in the form of conical segment section channels (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0855800 | 2008-08-29 | ||
| FR0855800A FR2935278B1 (en) | 2008-08-29 | 2008-08-29 | PRECENTERING DEVICE FOR AUTOMATICALLY ASSEMBLING THERMAL EXPANSION OF TOOLS WITH A TOOL HOLDER. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010023412A1 true WO2010023412A1 (en) | 2010-03-04 |
Family
ID=40464317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2009/051635 WO2010023412A1 (en) | 2008-08-29 | 2009-08-27 | Precentring device for automatic assembly by thermal expansion of tools with a tool holder |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2935278B1 (en) |
| WO (1) | WO2010023412A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013037458A1 (en) * | 2011-09-15 | 2013-03-21 | Haimer Gmbh | Clamping system and base, collet chuck and rotary tool therefor and method for mounting the rotary tool in the clamping system |
| WO2014131797A1 (en) * | 2013-03-01 | 2014-09-04 | Bilz Werkzeugfabrik Gmbh & Co. Kg | Tool head having a shrink-fit chuck |
| WO2015107101A1 (en) * | 2014-01-15 | 2015-07-23 | Helmut Diebold Gmbh & Co. Goldring-Werkzeugfabrik | Tool holder comprising a nozzle ring |
| US11135658B1 (en) * | 2021-05-05 | 2021-10-05 | Techniks, LLC | Tool holder with induction disruption cavity |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0830917A1 (en) * | 1996-09-20 | 1998-03-25 | Marquart, Ingeborg | Chuck for clamping a tool on a machine tool and device for clamping tools by shrink fitting |
| WO2002026429A1 (en) * | 2000-09-29 | 2002-04-04 | Schunk Gmbh & Co. Kg Fabrik Für Spann- Und Greifwerkzeuge | Heat-shrinkable chuck |
| DE10244759A1 (en) * | 2002-09-26 | 2004-04-15 | Bauer, Walter, Dr.-Ing. | Chuck for thermal shrink-wrapping of shafts has deep radial annular groove in receiver close to shell endface |
| EP1797983A1 (en) * | 2005-12-16 | 2007-06-20 | Gühring OHG | Shrink fit chuck with eccentric positioning |
-
2008
- 2008-08-29 FR FR0855800A patent/FR2935278B1/en not_active Expired - Fee Related
-
2009
- 2009-08-27 WO PCT/FR2009/051635 patent/WO2010023412A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0830917A1 (en) * | 1996-09-20 | 1998-03-25 | Marquart, Ingeborg | Chuck for clamping a tool on a machine tool and device for clamping tools by shrink fitting |
| WO2002026429A1 (en) * | 2000-09-29 | 2002-04-04 | Schunk Gmbh & Co. Kg Fabrik Für Spann- Und Greifwerkzeuge | Heat-shrinkable chuck |
| DE10244759A1 (en) * | 2002-09-26 | 2004-04-15 | Bauer, Walter, Dr.-Ing. | Chuck for thermal shrink-wrapping of shafts has deep radial annular groove in receiver close to shell endface |
| EP1797983A1 (en) * | 2005-12-16 | 2007-06-20 | Gühring OHG | Shrink fit chuck with eccentric positioning |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013037458A1 (en) * | 2011-09-15 | 2013-03-21 | Haimer Gmbh | Clamping system and base, collet chuck and rotary tool therefor and method for mounting the rotary tool in the clamping system |
| JP2014526389A (en) * | 2011-09-15 | 2014-10-06 | ハイマー ゲーエムベーハー | Clamping system and base body, collet, rotary tool therefor, and method for mounting a rotary tool in a clamping system |
| US9878376B2 (en) | 2011-09-15 | 2018-01-30 | Haimer Gmbh | Clamping system and base, collet chuck and rotary tool therefor and method for mounting the rotary tool in the clamping system |
| WO2014131797A1 (en) * | 2013-03-01 | 2014-09-04 | Bilz Werkzeugfabrik Gmbh & Co. Kg | Tool head having a shrink-fit chuck |
| US10040129B2 (en) | 2013-03-01 | 2018-08-07 | Bilz Werkzeugfabrik Gmbh & Co. Kg | Tool head having a shrink-fit chuck |
| WO2015107101A1 (en) * | 2014-01-15 | 2015-07-23 | Helmut Diebold Gmbh & Co. Goldring-Werkzeugfabrik | Tool holder comprising a nozzle ring |
| US11135658B1 (en) * | 2021-05-05 | 2021-10-05 | Techniks, LLC | Tool holder with induction disruption cavity |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2935278B1 (en) | 2011-12-09 |
| FR2935278A1 (en) | 2010-03-05 |
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